package com.example.demo.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

@Configuration//定义这是一个配置类

public class RedisConfig {
    @Bean
    public RedisTemplate<Object,Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){
        RedisTemplate<Object,Object> redisTemplate=new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        //使用json格式序列化对象，对缓存数据key和value进行转换
        Jackson2JsonRedisSerializer<Object> JsonRedisSerializer=new Jackson2JsonRedisSerializer<Object>(Object.class);

        //解决查询缓存转换异常问题
        ObjectMapper om=new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);

        JsonRedisSerializer.setObjectMapper(om);

        //设置redistemplate 模板API序列方式为json
        redisTemplate.setDefaultSerializer(JsonRedisSerializer);
        return redisTemplate;

    }
}
